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Finding the Fourth Proportional to 391,481.04, 587,218.32 and 232,657.68

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Solution

The fourth proportional to 391,481.04, 587,218.32 and 232,657.68 is: 348,984.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,481.04 : 587,218.32 = 232,657.68 : x
  2. Step 2: Convert to fraction form
    391,481.04/587,218.32 = 232,657.68/x
  3. Step 3: Cross multiply
    391,481.04x = 587,218.32 × 232,657.68
  4. Step 4: Simplify right side
    391,481.04x = 136,620,851,984.70
  5. Step 5: Solve for x
    x = 136,620,851,984.70/391,481.04
  6. Step 6: Final answer
    x = 348,984.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.